CN104656245B - One kind wears eyepiece system and wears display device - Google Patents
One kind wears eyepiece system and wears display device Download PDFInfo
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- CN104656245B CN104656245B CN201510073382.5A CN201510073382A CN104656245B CN 104656245 B CN104656245 B CN 104656245B CN 201510073382 A CN201510073382 A CN 201510073382A CN 104656245 B CN104656245 B CN 104656245B
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- lens
- eyepiece system
- positive lens
- negative lens
- display screen
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/001—Eyepieces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- Optics & Photonics (AREA)
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Abstract
Eyepiece system being worn the invention discloses one kind and wearing display device, the eyepiece system of wearing includes：Camber display screen and two groups of eyepieces for being respectively used to left eye and right eye；Between light path diaphragm and the camber display screen, along light incident direction, every group eyepiece sets gradually a negative lens and a positive lens, and the negative lens is movable lens, and the positive lens is fixed lens；The negative lens can do shearing movement relative to positive lens, and, perpendicular to the optical axis of positive lens, motion track is in the plane that the optical axis of positive lens determines with the centre normal of camber display screen for moving direction.The technical program by mobile negative lens change light enable in the relative height of incidence of negative lens described in wear the camber display screen that eyepiece system is adapted to different curvature.
Description
Technical field
The present invention relates to optical technical field, more particularly to one kind wears eyepiece system and wears display device.
Background technology
With the progress of science and technology, camber display screen will progress into the visual field of people, therefore camber display screen
Can be applied in wear-type visual device (Head Mount Display, HMD) system gradually.
HMD optical systems coaxial now cannot meet camber display screen, and because camber display screen has one in curvature
The fixed free degree is so need the curve screens that optical system can be satisfied with certain curvature scope in the way of adjusting.
The content of the invention
Eyepiece system being worn the invention provides one kind and wearing display device, different curvature can be adapted to by regulation
Camber display screen.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
On the one hand, eyepiece system is worn the invention provides one kind, the eyepiece system of wearing includes：Camber display screen and
It is respectively used to two groups of eyepieces of left eye and right eye；Between light path diaphragm and the camber display screen, along light incident direction,
Every group of eyepiece sets gradually a negative lens and a positive lens,
The negative lens is movable lens, and the positive lens is fixed lens；
The negative lens can relative to positive lens do shearing movement, moving direction perpendicular to positive lens optical axis, moving rail
Mark is located in the plane that the optical axis of positive lens determines with the centre normal of camber display screen.
Wherein, the negative lens includes successively along light incident direction：First surface for plane and for concave surface
Two surfaces；
The positive lens includes successively along light incident direction：The 3rd surface for convex surface and the 4th table for plane
Face.
Wherein, the focal length f for wearing eyepiece system, the focal length f of the negative lens1, the focal length f of positive lens2Meet following
Relational expression：
Wherein, the overall length L for wearing eyepiece system, Jiao l meets following relational expressions after system：
Wherein, the displacement vector d of the negative lens, the subsequent corrosion R of the camber display screen meet following relational expressions：
-6.8mm<d<6.8mm,
Preferably, the 3rd surface of the second surface of the negative lens and the positive lens is aspherical.
It is further preferred that the aspherical highest item on the second surface and the 3rd surface is quadratic term,
The aspherical secondary term coefficient on the second surface and the 3rd surface is respectively k2、k3, wherein -1 ＜ k2＜ 0, -20
＜ k3＜ -1.
It is further preferred that the negative lens and the positive lens are plastic material；
The ranges of indices of refraction of the negative lens is 1.45 ＜ n1＜ 1.75, dispersion range is 25 ＜ v1＜ 40；
The ranges of indices of refraction of the positive lens is 1.45 ＜ n2＜ 1.70, dispersion range is 50 ＜ v2＜ 75.
It is further preferred that plastic material of the negative lens for POLYCARB models, its refractive index n1=
1.5588470, dispersion v1=29.91；
The positive lens is the plastic material of E48R models, its refractive index n2=1.531160, dispersion v2=56.04.
On the other hand, display device is worn the invention provides one kind, including above-mentioned technical proposal wears eyepiece system.
The beneficial effect of the embodiment of the present invention is：Eyepiece system is worn the invention discloses one kind and wear display device,
Because the bending normal of camber display screen is parallel to the optical axis of positive lens, the defocus being highly directly proportional to image planes, this implementation are caused
By adjusting negative lens moved corresponding to the shearing of positive lens, time defocus can be effectively compensated, so that by changing light
Line is adapted to the camber display screen of different curvature in the relative height of incidence on negative lens surface.
Brief description of the drawings
Fig. 1 is the operation principle schematic diagram for wearing display device provided in an embodiment of the present invention；
Fig. 2 is the single group goggle structure schematic diagram for wearing eyepiece system provided in an embodiment of the present invention；
Fig. 3-6 is followed successively by 100mm, 200mm, 400mm for the eyepiece system of wearing that present invention implementation body is provided using radius
Camber display screen and flat-faced screen light path schematic diagram；
To use radius be the eyepiece system of wearing of the camber display screen of 100mm to Fig. 7-13 for provided in an embodiment of the present invention
Point range figure；
Figure 14-20 uses radius to wear eyepiece system for the camber display screen of 200mm for provided in an embodiment of the present invention
Point range figure；
Figure 21-27 uses radius to wear eyepiece system for the camber display screen of 400mm for provided in an embodiment of the present invention
Point range figure；
Figure 28-34 is the point range figure for wearing eyepiece system of use flat-faced screen provided in an embodiment of the present invention；
Figure 35-36 is followed successively by and provided in an embodiment of the present invention uses radius to wear eyepiece for the camber display screen of 100mm
The curvature of field curve and distortion aberration curve synoptic diagram of system；
Figure 37-38 is followed successively by and provided in an embodiment of the present invention uses radius to wear eyepiece for the camber display screen of 200mm
The curvature of field curve and distortion aberration curve synoptic diagram of system；
Figure 39-40 is followed successively by and provided in an embodiment of the present invention uses radius to wear eyepiece for the camber display screen of 400mm
The curvature of field curve and distortion aberration curve synoptic diagram of system；
Figure 41-42 is followed successively by the curvature of field curve for wearing eyepiece system of use flat-faced screen provided in an embodiment of the present invention
With distortion aberration curve synoptic diagram.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is the operation principle schematic diagram for wearing display device provided in an embodiment of the present invention, what camber display screen sent
Light forms a huge virtual image by the eyepiece system corresponding to eyes at 10m before human eye, then is received by human eye, so as to give
Sensation of the people to shake.
When designing the optical system that this wears display device, using reverse trace, make to wear the curved-surface display of display device
Screen is located at diaphragm positioned at the image planes position of optical system, eye-observation pupil, and system institute is located at object plane position into the virtual image.
The optical system includes camber display screen and two groups of eyepieces corresponding to right and left eyes, and every group of eyepiece includes a positive lens
With a negative lens, wherein, near human eye, negative lens is near camber display screen for positive lens；Because the bending normal of camber display screen is put down
In the optical axis of positive lens, so as to cause the defocus being highly directly proportional to image planes, therefore displacement by negative lens can have row
The compensation of effect time defocus is adapted to the camber display screen of different curvature.
Based on above-mentioned design philosophy, eyepiece system is worn the invention provides one kind, this wears eyepiece system includes：Curved surface
Display screen and two groups of eyepieces for being respectively used to left eye and right eye；It is incident along light between light path diaphragm and camber display screen
Direction, every group of eyepiece sets gradually a negative lens and a positive lens.
As shown in Fig. 2 being the single group goggle structure schematic diagram for wearing eyepiece system provided in an embodiment of the present invention, negative lens
L1 is movable lens, for changing relative height of incidence of the light in negative lens L1, compensates the defocus of camber display screen；It is just saturating
Mirror L2 is fixed lens；
Negative lens L1 makees shear displacemant movement relative to positive lens L2, and moving direction is moved perpendicular to the optical axis of positive lens L2
Track is located in the plane that the optical axis of positive lens L2 determines with the centre normal of camber display screen.
Above-mentioned technical proposal carries out shear displacemant movement by negative lens, changes light in the relatively incident high of negative lens
Degree, compensates the defocus of camber display screen, so that the optical system of the camber display screen can be produced corresponding to flat-faced screen
The huge virtual image, the viewing immersed can be produced to feel after being received by user, improve experience.
It should be noted that being adaptation different curvature Curved screen, it is also possible to set positive lens L2 for movable lens, bear saturating
Mirror L1 is to fix lens, or negative lens L1 and positive lens L2 are movable lens, by mobile positive lens L2 or movement
Negative lens L1 and positive lens L2 reach the effect of the camber display screen of adaptation different curvature, but because positive lens L2 is near human eye,
Exposed to outside, if positive lens L2 is set into the trouble that movable lens not only result in interpupillary distance change, nor easily
In doing dust-proof treatment.Therefore, negative lens L1 is set to movable lens by the technical program, positive lens L2 is set to fixed saturating
Mirror.
Wherein, the negative lens L1 in the present embodiment includes successively along light incident direction：It is the first surface 21 of plane
With the second surface 22 for concave surface；
Positive lens L2 includes successively along light incident direction：It is the 3rd surface 23 and the 4th surface for plane on convex surface
24。
In the preferred embodiment of the present invention, the above-mentioned focal length f for wearing eyepiece system, the focal length f of negative lens L11, just
The focal length f of lens L22Meet following relational expressions：
The above-mentioned overall length L for wearing eyepiece system, Jiao l meets following relational expressions after system：
Wherein, the overall length for wearing eyepiece system be between the 4th surface 24 of positive lens L2 and camber display screen away from
From Jiao is from the distance between the first surface 21 of negative lens L1 and camber display screen after system.
The displacement vector d of negative lens L1, the subsequent corrosion R of camber display screen meets following relational expressions：
-6.8mm<d<6.8mm,
In another preferred embodiment of the invention, the second surface 22 of negative lens L1 and the 3rd surface 23 of positive lens L2
It is aspherical；Negative lens L1 and positive lens L2 are plastic material.The technical program is by using the positive and negative of aspherical plastics
Lens combination, ensure that the miniaturization of single group eyepiece, lightweight, and being capable of reduces cost.
It should be noted that the aspherical highest item number of times on the surface 23 of second surface 22 and the 3rd is even number, Ke Yiwei
More than or equal to 2, when highest item is quadratic term, the aspherical secondary term coefficient on the surface 23 of second surface 22 and the 3rd is respectively
k2、k3, wherein -1 ＜ k2The ＜ k of ＜ 0, -203＜ -1.
It is further preferred that the ranges of indices of refraction of negative lens L1 is 1.45 ＜ n1＜ 1.75, dispersion range is 25 ＜ v1＜
40；Specifically, plastic materials of the negative lens L1 for POLYCARB models, its refractive index n1=1.5588470, dispersion v1=
29.91；
The ranges of indices of refraction of positive lens L2 is 1.45 ＜ n2＜ 1.70, dispersion range is 50 ＜ v2＜ 75；Specifically, just saturating
Mirror L2 is the plastic material of E48R models, its refractive index n2=1.531160, dispersion v2=56.04.
It should be noted that the camber display screen of the present embodiment is also applied for flexible display screen.
In the above-mentioned technical solutions, this wears eyepiece system can reach 56 ° of maximum field of view angle, and emergent pupil is away from being 12-
15mm, system axial size is the technical indicator of 56.4mm, and this is worn eyepiece system and can be applied to 5.5 cun of curved surface LEDs
Screen, the radius of the curved surface LED screen can be from 100mm to positive infinity.
The eyepiece system of wearing of the present embodiment includes two groups of eyepieces of camber display screen and right and left eyes, in light path diaphragm and song
Between the display screen of face, along light incident direction, a negative lens and a positive lens are set gradually in every group of eyepiece, although due to curved surface
The bending normal of display screen can cause the defocus being highly directly proportional to image planes parallel to the optical axis of positive lens, but by negative lens
Displacement can effectively compensate time defocus, therefore this can be made to wear the curved surface that eyepiece system is adapted to different curvature by regulation
Display screen.
Another embodiment of the present invention is supplied to one kind and wears display device, and this wears display device includes above-mentioned technology
Scheme wears eyepiece system.
Preferably, the head-mounted display apparatus are to insert Mobile phone type HMD, or the HMD for carrying display screen.
Fig. 3-6 be respectively the present invention implement body provide wear eyepiece system using radius be followed successively by 100mm, 200mm,
The light path schematic diagram of 400mm camber display screens and flat-faced screen, as can be seen that being used when eyepiece system is worn from four width figures
When the camber display screen and flat-faced screen of different radii, the position of positive and negative lens piece has significantly different.
To use radius be the eyepiece system of wearing of the camber display screen of 100mm to Fig. 7-13 for provided in an embodiment of the present invention
Point range figure, to use radius be the eyepiece system of wearing of the camber display screen of 200mm to Figure 14-20 for provided in an embodiment of the present invention
To use radius be the eyepiece system of wearing of the camber display screen of 400mm for provided in an embodiment of the present invention for point range figure, Figure 21-27
Point range figure, Figure 28-34 is the point range figure for wearing eyepiece system of use flat-faced screen provided in an embodiment of the present invention, point range figure
It is shown that the disc of confusion that each field rays of system are converged and formed at image planes, the system of characterizing obtains various differences
Characteristic, the image quality of RMS RADIUS (root mean square radii) the smaller proof system in point range figure is better.It is different in four width figures
Greyscale color represents three kinds of light of wave band respectively, and three kinds of aberration of the system of more making out a certificate of the disc of confusion of greyscale color point are more
Greatly, corresponding to Fig. 7-13, Figure 14-20, Figure 21-27 and Figure 28-34 different display screens system in imaging angle (OBJ image planes)
Disc of confusion root mean square radii under 0.00 °, 10.00 °, 25.00 °, -10.00 °, -25.00 °, -28.00 ° and 28.00 ° is successively
It is 15.860 μm, 36.542 μm, 107.731 μm, 36.542 μm, 107.731 μm, 125.699 μm, 125.699 μm and (corresponds to figure
7-13's wears eyepiece system)；20.254μm、44.487μm、77.606μm、33.724μm、100.991μm、119.736μm、
82.037 μm (wearing eyepiece system corresponding to Figure 14-20)；31.439μm、53.034μm、48.874μm、38.381μm、
105.997 μm, 124.033 μm, 42.017 μm (wearing eyepiece system corresponding to Figure 21-27)；56.943μm、66.994μm、
120.839 μm, 57.706 μm, 132.317 μm, 151.147 μm, 140.929 μm (are worn eyepiece system corresponding to Figure 28-34
System)；It can thus be appreciated that the aberration of the system obtains good correction.
Figure 35-36, Figure 37-38, Figure 39-40, Figure 41-42 are respectively to be followed successively by 100mm, 200mm, 400mm using radius
Camber display screen and flat-faced screen wear the curvature of field curve and distortion aberration curve synoptic diagram of eyepiece system, wherein, Figure 35,
37th, 39 and 41 is curvature of field curve synoptic diagram, and Figure 36,38,40 and 42 are distortion aberration curve synoptic diagram, curvature of field curve synoptic diagram t
Line is meridianal curvature of field, and s lines are Sagittal field curvature, and the difference of meridianal curvature of field and Sagittal field curvature is the astigmatism of system, the curvature of field and astigmatic influence
The aberration of the outer field rays of system axle, difference crosses the serious image quality for having influence on system off-axis ray of conference, from Figure 35,
37th, the curvature of field and astigmatism that can be seen that the system in 39 and 41 four width figures in corresponding curvature of field curve synoptic diagram are corrected
To in very low range；Distortion does not interfere with the definition of system, can only cause system anamorphose, and distortion can be by later image
Manage to solve.
In sum, wear eyepiece system the invention discloses one kind and wear display device, due to camber display screen
Bending normal causes the defocus being highly directly proportional to image planes parallel to the optical axis of positive lens, and this implementation is entered by adjusting negative lens
Row is moved corresponding to the shearing of positive lens, time defocus can be effectively compensated, so that by changing light on negative lens surface
The camber display screen of different curvature is adapted to respect to height of incidence.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. one kind wears eyepiece system, it is characterised in that the eyepiece system of wearing includes：Camber display screen and it is respectively used to a left side
Two groups of eyepieces of eye and right eye；Between light path diaphragm and the camber display screen, along light incident direction, every group of eyepiece according to
It is secondary that a negative lens and a positive lens are set,
The negative lens is movable lens, and the positive lens is fixed lens；
The negative lens can relative to positive lens do shearing movement, moving direction perpendicular to positive lens optical axis, motion track position
In in the plane that the optical axis of positive lens determines with the centre normal of camber display screen.
It is 2. according to claim 1 to wear eyepiece system, it is characterised in that
The negative lens includes successively along light incident direction：First surface for plane and the second surface for concave surface；
The positive lens includes successively along light incident direction：It is the 3rd surface and the 4th surface for plane on convex surface.
3. it is according to claim 1 to wear eyepiece system, it is characterised in that the focal length f for wearing eyepiece system, it is described
The focal length f of negative lens1, the focal length f of positive lens2Meet following relational expressions：
4. it is according to claim 1 to wear eyepiece system, it is characterised in that the overall length L for wearing eyepiece system, system
Jiao l meets following relational expressions afterwards：
5. it is according to claim 1 to wear eyepiece system, it is characterised in that the displacement vector d of the negative lens, it is described
The subsequent corrosion R of camber display screen meets following relational expressions：
6. it is according to claim 2 to wear eyepiece system, it is characterised in that the second surface of the negative lens and it is described just
3rd surface of lens is aspherical.
7. it is according to claim 6 to wear eyepiece system, it is characterised in that the aspheric on the second surface and the 3rd surface
The highest item in face is quadratic term,
The aspherical secondary term coefficient on the second surface and the 3rd surface is respectively k2、k3, wherein -1 ＜ k2The ＜ k of ＜ 0, -203
＜ -1.
8. it is according to claim 7 to wear eyepiece system, it is characterised in that the negative lens and the positive lens are modeling
Material material；
The ranges of indices of refraction of the negative lens is 1.45 ＜ n1＜ 1.75, dispersion range is 25 ＜ v1＜ 40；
The ranges of indices of refraction of the positive lens is 1.45 ＜ n2＜ 1.70, dispersion range is 50 ＜ v2＜ 75.
9. it is according to claim 8 to wear eyepiece system, it is characterised in that the negative lens is the modeling of POLYCARB models
Material material, its refractive index n1=1.5588470, dispersion v1=29.91；
The positive lens is the plastic material of E48R models, its refractive index n2=1.531160, dispersion v2=56.04.
10. one kind wears display device, it is characterised in that including wearing eyepiece system described in claim any one of 1-9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9939648B2 (en) * | 2015-06-23 | 2018-04-10 | Google Llc | Head mounted display device with dual curved displays |
| JP2019505843A (en) | 2016-01-22 | 2019-02-28 | コーニング インコーポレイテッド | Wide-view personal display device |
| CN106324838B (en) * | 2016-09-30 | 2019-04-16 | 中国科学院长春光学精密机械与物理研究所 | A kind of virtual reality device and virtual reality system |
| US10976551B2 (en) | 2017-08-30 | 2021-04-13 | Corning Incorporated | Wide field personal display device |
| FR3094098A1 (en) * | 2019-03-22 | 2020-09-25 | Valeo Comfort And Driving Assistance | Head-up display with curved screen |
| CN111699428A (en) * | 2019-06-26 | 2020-09-22 | 深圳市大疆创新科技有限公司 | Optical lens group, imaging system and wearable display device |
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| CN204536649U (en) * | 2015-02-11 | 2015-08-05 | 青岛歌尔声学科技有限公司 | One is worn eyepiece system and is worn display device |
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| JP3212762B2 (en) * | 1993-06-11 | 2001-09-25 | オリンパス光学工業株式会社 | Display device |
| US6201647B1 (en) * | 1998-07-06 | 2001-03-13 | Minolta Co., Ltd. | Image display apparatus |
| CN101470262B (en) * | 2007-12-27 | 2011-08-17 | 比亚迪股份有限公司 | Optical imaging device of miniature display eyepiece |
| CN102707428B (en) * | 2012-05-22 | 2014-06-04 | 长春理工大学 | Diffractive-refractive mixed type eyepiece used for curvature image plane with long exit pupil distance |
| CN103048771B (en) * | 2012-12-13 | 2015-10-21 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of small light low-light-level night vision eyepiece optical system |
| US10534172B2 (en) * | 2013-07-16 | 2020-01-14 | Sony Corporation | Display apparatus |
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| CN204536649U (en) * | 2015-02-11 | 2015-08-05 | 青岛歌尔声学科技有限公司 | One is worn eyepiece system and is worn display device |
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Inventor after: Wang Yuanpeng Inventor after: Jiang Bin Inventor before: Wang Yuanpeng |
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Effective date of registration: 20201010 Address after: 261031 north of Yuqing street, east of Dongming Road, high tech Zone, Weifang City, Shandong Province (Room 502, Geer electronic office building) Patentee after: GoerTek Optical Technology Co.,Ltd. Address before: International Exhibition Center of wealth 18 No. 266061 Shandong province Qingdao city Laoshan District No. 3 Qinling Mountains Road, building 5 floor Patentee before: Qingdao GoerTek Technology Co.,Ltd. |
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